Concentration State Evaluation Method, Non-Transitory Computer-Readable Storage Medium Storing Concentration State Evaluation Program, And Concentration State Evaluation Device

A concentration state evaluation method for a computer to evaluate a concentration state of a user, the concentration state evaluation method causing the computer to execute:

• a first measurement step of acquiring reference pulse wave information that represents a pulse wave detected by a pulse wave sensor worn by the user and that represents a pulse wave during each period of a resting period and a specified working period of the user, and measuring an interbeat interval during each period of the resting period and the specified working period, based on the reference pulse wave information;
• a second measurement step of acquiring target pulse wave information that represents a pulse wave detected by the pulse wave sensor and that represents a pulse wave during an arbitrary desk work period of the user, and measuring an interbeat interval during the desk work period, based on the target pulse wave information;
• an index value calculation step of calculating rMSSD, which is a root mean square of a difference between adjacent interbeat intervals for each predetermined time, as an index value of the concentration state, based on the interbeat interval measured in the first measurement step or the second measurement step, and finding an index value group corresponding to each period of the resting period, the specified working period, and the desk work period;
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• an evaluation step of analyzing the index value group corresponding to the desk work period with reference to each of the index value group corresponding to the resting period and the index value group corresponding to the specified working period, and thus evaluating the concentration state of the user during the desk work period.